Build additional living space on your property in Lisburn

A granny annexe is the ideal solution for offering a young family member their own space in your home while they save up for their own house, or to help an older relative have some independence while keeping them at a safe distance. But how much do they cost to build in Lisburn? To see prices and availability for your job click green button.

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From £86,400

Last active Oct 26
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T.I Building

T.I Building is a trusted extension builder serving customers in Lisburn and the surrounding area. Contact us to today to get a competitive quote f...

From £86,136

Last active Jun 26
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Mount Oriel Conversions & Extensions

Need to find an Extension Builder near you for all your extension buildering work?

Mount Oriel Conversions & Extensions provides a local, t...

From £86,368

Last active May 26
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SM Plumbing & Heating

Relax... you have found a reliable extension builder in Lisburn. SM Plumbing & Heating is a friendly and reliable company based in Lisburn who cons...

From £86,336

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Belfast Loft Company

Trusted and professional extension builder in Lisburn. Experienced in all extension buildering work and keeping within budget and on quote. Belfast...

From £86,488

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AK Building Services

Adam King

Ak building 

From £86,384

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Finch Construction NI

Relax... you have found a reliable extension builder in Lisburn. Finch Construction NI is a friendly and reliable company based in Lisburn who cons...

From £86,176

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Extended living by Gilbert-Ash

Trusted and professional extension builder in Lisburn. Experienced in all extension buildering work and keeping within budget and on quote. Extende...

Granny Annexe Cost in Lisburn

Estimates for granny annexe near Lisburn

Building a granny annexe ranges from £86,136 (Mount Oriel Conversions & Extensions based in BT8) to £86,488 (AK Building Services based in BT8), but these are just estimates that can help give you an idea of who will be better value in your area.

The best thing to do is to get quotes to build a granny annexe in Lisburn by posting a job with HaMuch. We will send it to extension builders in Lisburn who will be happy to help you.


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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Granny Annexe near Lisburn£24£164
Granny Annexe near Hillsborough and Culcavy£25£170
Granny Annexe near Maghaberry£31£205
Granny Annexe near Carryduff£23£158
Granny Annexe near Belfast£23£161
Granny Annexe near Crumlin£26£194
Granny Annexe near Saintfield£23£162
Granny Annexe near Ballynahinch£19£189
Granny Annexe near Waringstown£23£167
Granny Annexe near Comber£22£160

Estimates for common extension builder jobs in Lisburn;

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

More extensions & conversions cost guides...